What is the fundamental criterion relied upon when considering an objection to the registration of a trademark similar to a well-known mark in a different class of goods or services?

⚡ Quick Answer:

The primary criterion is the extent of the likelihood of creating an association in the mind of the average consumer between the challenged mark and the well-known mark, and the potential prejudice resulting therefrom to the owner of the well-known mark, regardless of the difference in the registered classes of...